Hoseynabad-e Baba Khanjar (, also Romanized as ḨoseynÃÂbÃÂd-e BÃÂbàKhanjar; also known as HasanÃÂbÃÂd, Hosein Abad Mehraban, ḨoseynÃÂbÃÂd, and HusainÃÂbÃÂd) is a village in Shirin Su Rural District, Shirin Su District, Kabudarahang County, Hamadan Province, Iran. At the 2006 census, its population was 417, in 81 families.